Rear wheel and sprocket assembly



Aug. 16, 194$. HARE 2,479,162

REAR WHEEL AND SPROCKET ASSEMBLY Filed March '7, 1945 '\s\ I l i r.

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i fig t z i 1 m t i I NVENTOR. B Zena/ice Qfiare Patented Aug. 16, 1949 REAR" WHEELRND SPRGCKET'AS'SEMBLY y Terence G. Hare, Saginaw, Mich., assignor to Saginaw Products, @orporation, Saginaw; Mich.

' Application. Maren 7, 194%; Serial No. 581,511

(crews-er Thisainventi'on relates-tea combination pressed steetwheel-and driving means such as used on motorcycles and similar devices for connecting the wheel with the power plant of the vehicle.

One of the prime objects of the invention. is to design a unitary wheel, brake. drum. and driw ing means which can be readily assembled and mounted andto which the mobile power and brake can be readily connected.

Another" object is to designiazcombinatihn. rear wheel anct Sprocket assembly incruding a; cylindricial' stamped laterally projecting structure wedded; tethe rim section of theawheel, the. earmdricalrsection of. said membergiorming. a. brake drum to which a drive sprocket can readily connected; r 1 r Still a further object is. to provide a unitary pressed :wheeland brake drum on which a drive sprocket: is mounted, Whicl'n drum is designed to eq ilalize and balance all and: driving strains with the torquerannliediatl the o-fi' the wheel structure.

A further object still is to design a pressed steel wheel which can be readily welded and which is provided with pressed spoke sections forming re cesses to accommodate the Welds, the design eliminating distortion or misalignment of the members due to the Welding operation.

A further object is to design a unitary Wheel and offset brake drum structure in which the driving torque is applied at the point of connection of the wheel discs to the hub with the brake and sprocket drive torque applied at the outer rim of the wheel.

With the above and other objects in view, the present invention consists in the combination and arrangement of parts,'hereinafter more fully described, illustrated in the accompanying drawing, and more particularly pointed out in the appended claims, it being understood that changes may be made in the form, size, proportion, and minor details of construction, without departing from the spirit, or sacrificing any of the advantages of the invention.

In the drawing:

Fig. 1 is a sectional, side-elevational view taken on the line ll of Fig. 2, the hub being broken away to more clearly show the construction.

Fig. 2 is an end-elevational View.

In the accompanying drawing there is shown an axle 5 mounted in a tubular hub 6, which hub is indented as at i to form shoulders for the conventional roller bearing assemblies 8 which are interposed between the hub and axle in the usual manner, theen'd or the axle being threaded as at: tll liareceivea nut as usualfi I A; pair of opposed pressed? disc members I-Z-and #3 respectively are welded on 'th e 'hub 6 and are secured together in facial contact by means of bolts 28', eacl t having arr'inner horizontally disposed flange ill for engagement witlrth hub, and theouter'seetion Pd ofthedi'scs being shaped to term on which a conventional tire mot shown) mounted; Y

Spaced: apart l8 are presseif'i rr'eachof the cliwsecticns" I and l3 and the discs are welded to the hub, the welds FF being-located the hubwithu'zn the space formed: bye the pressing of the ribs; m that ample space is provided and so that there is or husk-lingoi the mtalfatltlie point orweldi Jcbrake drum section-D is provided; on the one EDGTOB the wheat as shown, this is alsora pressed steer member and eomprisesa cylindrical offset drumsection MK terminating ina flange Fdwhfch fits the" flat section 20 .of the rim and secured thereto by a plurality of welds 2|.

The outer end face of the drum D is closed, and a centrally disposed flanged opening 22 is provided therein, the flange 23 engaging the cylindrical hub and provides a firm bearing thereon, and a drive sprocket 24 is secured to the end wall of the drum by means of bolts 25, suitable driving means (not shown) connecting the sprocket to any suitable source of power.

I wish to direct particular attention to the fact that the drive sprocket is connected to the drum at a point directly adjacent the wheel bearing, with the flange IQ of the drum connected at the rim of the wheel, so that the driving torque is applied at the outer periphery of the wheel and thence through the discs l2 and I3 to the hub, the drum and wheel forming a rigid box-like unitary structure mounted on a common hub.

The cylindrical section [8 forms an ideal brake drum as it too is directly adjacent the point .of application of the driving power and is so located that it can be easily and quickly attached or removed. This construction makes the drive sprocket, brake drum and associated parts readily accessible for any required purpose, and the construction is rigid, substantial and economical.

member having turned edges formed with a plurality of spaced-apart openings therein, a laterally projecting cylindrical drum section formed with a flange shaped to fit one of the said turned edges and provided with openings disposed in alignment with the openings in the tumed edges of the wheel to facilitate welding the rim of said wheel member and nest in the turned edge of the rim, said drum having a centrally disposed flanged .opening therein, an individual hub rigidly connected to the wheel and common to said wheel and drum section, and a driving member rigidly secured to the end wall of said drum sectionat a point closely adjacent the rim of the brake drum.

2. A rear wheel sprocket assembly comprising a pressed wheel having turned rim sections and including a hub, an axle, a pressed, flanged brake 4 brake drum and sprocket assembly rigidly mounted on said hub with its outer peripheral edge nested in the rim of one of said disc members, aligned openings in the rim and peripheral edge of the brake drum respectively to facilitate welding them together, said welds forming the driving connection between said brake drum and wheel.

5. A combination rear wheel and sprocket assembly comprising, an individual hub, an axle, a

pressed wheel member having turned edges mounted on said hub and rigidly welded thereto,

a laterally projecting flanged brake drum nested drum nested in one of the rim sections and welded 1 thereto, a centrally disposed opening in the end face. of the brake drum, an integral inwardly projecting sleeve surrounding said opening and rigidly mounted on said hub, and a driving member secured to the end wall of the drum at a point closely adjacent the rim of the drum.

3. The combination with a pressed wheel having a hub and a rim, of a driven, laterally-projecting flanged brake drum mounted on said hub with its upper flanged edge nested in and secured to the rim of the wheel, aligned openings in the rim and flange respectively to accommodate the welds, said flange forming the driving connection between said drum and wheel, and a sprocket member detachably secured to the outer face of the drum section at a point closely adjacent the outer periphery of the brake drum.

4. A combination pressed rear wheel and sprocket assembly comprising, a hub, pressed steel wheel disc members mounted thereon in facial contact and terminating in a tire receiving rim section, tapered spokes pressed in said discs for reinforcing the discs, and a laterally proj ecting in and welded to the turned edge of the rim of the Wheel aligned openings in the turned edges and brake drum flange respectively to accommodate the welds, a centrally flanged opening in the brake drum adapted to accommodate said hub, and a driving member detachably secured to said brake drum at a point closely adjacent the rim of the outer periphery of the brake drum.

TERENCE G. HARE.

REFERENCES CITED The following references are of record in the file of this patent:

UNITED STATES PATENTS Number Name Date 911,922 Towson Feb. 9, 1909 1,378,300 Williams May 17, 1921 1,940,541 Gettinger Dec. 19, 1933 1,993,430 Bell Mar. 5, 1935 2,018,913 Cautley Oct. 29, 1935 2,186,996 Short Jan. 16, 1940 2,348,550 Kroft et a1 May 9, 1944 FOREIGN PATENTS Number Country Date 256,880 Great Britain Aug. 19, 1926 323,617 Great Britain Jan. 9, 1930 

